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Phosphine/Benzocyclone-based Neutral Nickel Catalysts for Ethylene Polymerization and Copolymerization with Polar Monomersстатья Исследовательская статья
- Авторы: Fei Wang, Li Pan, Tuskaev Vladislav A., Gagieva Svetlana Ch, Li Yue-Sheng
- Журнал: Chinese Journal of Polymer Science (English Edition)
- Год издания: 2023
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- DOI: 10.1007/s10118-023-3044-x
- Аннотация: The efficient copolymerization of olefin with polar monomers using nickel-based catalysts presents a longstanding challenge.In this contribution, three phosphine-benzocyclone ligands and corresponding neutral nickel catalysts (Ni1: Ar = Ph; Ni2: Ar = 2-(C6H5)C6H4; Ni3: Ar = 2-(2',6'-(MeO)2C6H3)C6H4) were prepared and applied for the ethylene polymerization and copolymerization with polar monomers without any cocatalyst. The bulky substituent groups in complexes Ni2 and Ni3 contributed to high catalytic activities (up to 7.24 and 9.04 × 106 g mol ‒1 h‒1Ni, respectively), and produced high-molecular-weight polyethylene (Mw up to 545.7 kDa). Complex Ni3 exhibited high activities for ethylene polymerization at the level of 106 g molNi‒1h‒1across a wide range from 30 to 120 ℃, exhibitingexcellent high temperature tolerance. These nickel complexes were also effectively employed in the copolymerization of ethylene withmethyl acrylate, ethyl acrylate, butyl acrylate and lauryl acrylate, producing copolymers with high molecular weights (Mw up to 80.5 kDa)and high polar monomer incorporation (up to 8.2 mol%). Microstructure analyses revealed that the introduction of large sterically hinderedsubstituents facilitated the incorporation of polar functional units into the polymer backbone. This study demonstrates the potential of thesenickel-based catalysts for efficient copolymerization of olefin with polar monomers.
- Добавил в систему: Гагиева Светлана Черменовна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 2. | акт экспертизы | 1691139738735.jpg | 3,5 МБ | 4 августа 2023 [GagievaSvetlana1] | |
| 3. | Полный текст | Chinese_Journal_of_Chemistry_-_2023_-_Zubkevich_1.pdf | 2,0 МБ | 18 сентября 2023 [GagievaSvetlana1] |